chore: add license to headers

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/updater/prismupdater/UpdaterDialogs.h

@@ -1,10 +1,32 @@
+// SPDX-FileCopyrightText: 2023 Rachel Powers <508861+Ryex@users.noreply.github.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2023 Rachel Powers <508861+Ryex@users.noreply.github.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
 #pragma once
 
 #include <QDialog>
 #include <QTreeWidgetItem>
 
 #include "Version.h"
-#include "updater/prismupdater/GitHubRelease.h"
+#include "GitHubRelease.h"
 
 namespace Ui {
 class SelectReleaseDialog;